Electric door opener



F. C. ERNST ELECTRIC DOOR OPENER Filed Aug. l5 1922 A TTORNE Y Patented @et 23, i923. l

naar anv srarss sarete-r orfr aai. g rcs;

rREDEnIcK onnNsT, ornnw' YonK,N. Y;/ i `f Application filed enigmi, 1 5, `1322. sensi no .esenea to be actuatecLg-to releasethe latchotthe.

door, by energizing. an electro-magnet, the armature or' ywhich co-operates' with. the said'movable part. i Y

The main object 'of theinvention is Vto provide af device of'this type which is simple in construction, and which does' awayf with the vuse oflsprings for -returning the movable element of the striker to itsloclring'position. Y

Another object of the invention is to so.

construct the door opener thatfit can be conveniently coverted to fit Y either to the right or to the left.

A further object of the invention isv to' provide a deviceof the type described which is capable of manufacture on a commercial scale, 0r in other Vwords one which is -notso difficult to make as to be beyond the reasonable cost of such a contrivance'.-

l/Vith these and other objects in view,

Y: which will more fully appear as thenature of the invention is better understood, the

same consists in 'the' combination, arrangement and construction of parts hereinafter described, pointed out in the appended claim and Aillustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within1the Vscope'of the appended claim, without departing from the spirit or sacrificing any of the advantages of the invention. Y

One of the many-possible embodiments ot'v the invention is illustrated in the accompanying drawings, in which Figure 1 is aside. elevation of a door opener constructed in accordance with the present invention; Fig. 2 is a section taken on line 2 2 of Fig 1; Fig. 3 is an elevation similar to the one shown in Fig.11, the elements being shown inv other positions and Fig. 4 is a section taken on line 2%-4 of Fig. 3.

'endthe pivot pin `15, to f 13VV is fi-Xedly attached, Y is provided with lan enlargement V17Yhaving* a krecess 18 infitsv lnthis ccessfis adapted to be". g

doors opening' In the drawings, the numeral. 10, indicates est a casingiadaptedto be inserted into amor- .vv

tisc in `thevdoor trarne, ity beingprovided f i with a i-ace fiush with thedoor iframe.

plate llfwhich is substantially' In the face plate.

isprovided-a transverse 'slot 12, into which projects .thepiv'oted y member 13 of:v the Y striker, saidfm'ember turning'. on vertical Vpivots 141 and 15 in the top and bot# tom,. respective'ly;l vOf the casing: 10. pifvoted'I nember,13v is provided with a longitudinal'rece'ss 1 6, into which fit-s,l the latch of Vthe lockot a door.

which .the member `inner afcegk seated fa substantially vertically extending dog' 1 9,- which isadaptedto swing, Ona hori- Zontal pivotv pinl 20, eXten'din'g thro igh the V said dog and through lugs 21 on a lverti- The dog lis end witha 80 cal partition 220i the casing. VprovidedV adjacent its. pivoted notch 23, as clearly shown in Figs. 1 and 3 oit the drawings. Y g y j Between the partition and the rear plate 24 of the casing is disposed an electromagfnet-25, inserted intopan electric circuit, con 85 This .electromagnet extends tainingan electric battery and switches,

not shown.

Adjacent its lower vertically, vthe lower vtree end of its core 26A- i kcooperating with a substantially horizontal-V ly extending armature 27,7which is pivoted at 28 to the casing,

29l projecting Vthrough l an opening'l 30 in the its front pointed end Apartition 22 and abutting against therear*v face of the'dog 19, when the electric circuit is open (Fig. 1).

The casing 10 is provided with plate31 which'fis adapted to beseoured to eitherside ofthe casing, it limiting.themovementV of vthe -pivoted member 13 toward locking position. l y n The operation of thisdevice is as gtollows:

l/Vhen the elements -are in .the 'positionsv shown in Figs. 1 and`2 of the drawings, in

which the 'electromagnet is deenergi'zed, the

dog 19 is vseated in the recess 18m the veX'- 4tension 17 of the movable element 13 of the striker, thepointed end of the armature 27 being disposed below the notch oi-thesaid 1 f l dog and preventing thereby vaA disengagement of lthe latter from the'said enlarged portion 17. The member 13 is' thus prevented from turning on vits pivots, thereby securely 'locking the door. lWhenthe elec# tromagnet is' energized, the armctnre 27 will be drawn upwards, its pointed endV f registering thereby with the notch 23.

y shown in Fig. 4 ot the drawings, the dog drawings, i

engagement withthe enlargedrportion 17 19 being unseated Jfrom the recess in the enlargement 17. The elements ocenpy then the positions shown in 3 and 4lo the drawings; Then the. door is being closed,

the Vlatch strikes against the pivote'cl member 13 moving the same intortlie position shown in 2 of the drawings, the dog 19 movingentomatically tonvoilizing position, that istfo say into the recess in the enlargement 17 and the armatnrej position shownfin Figp of the drawings into the positionshown in F 1 of the thereby holding' the saiddog in ofthe pivotedl member Thedog moves into engaging position gravity, y

From 'the foregoing' itwil be seenthat there 'are no springs employed in the'` device,

as nsiial in constructions of this type. The

eontrivance isythns-` less liable to get out of order. t is to be noted from Figs'. 2 and 4' of the drawings that the 'cover plate dropping from the` 3l forms a stop, limiting the movement of the pivot-ed member 13 in the direction of the arrow shown in Fig. e of the drawings, that is to say toward closing position. lf the device is to be made use of .in connec.- tion with doors which move in the opposite direction,'the said cover plate is detached from the casing, and secured to the opposite face thereof, thisI being the only change necessary to convert the door opener for use withswinging doors moving;l either to the le'l't or tothe right. 1 Y' n i electric deer opener, comprising e pivoted member having airecess, a. dog norv' seated in said recessto prevent movement ot' said pivoted member, said dog having` a notch, an ern `ture normally abuttin vinst said dog to prevent releasing pivoted member, an electromagnet cooperating' with said armature, said armeture beingbroiight into registry with said noteh when'attracted by said eleetromagnet, thereby permitting disengagement of said dof; from said p'ivoted member.

Signed at New4 York, in the coiintyy ot New York and State of New York, this 278th day of July, A, D., 1922.

' FREDERGK C. ERNST?.

of said 

